-al -ic a-a a-b a-c a-i a-t aaa aab aac aai aal aan aas aat ab- aba abb abc abi abl abn abs abt ac- aca acb acc aci acl acn acs act ai- aia aib aic aii ail ain ais ait al- ala alb alc ali all aln als alt an- ana anb anc ani anl ann ans ant as- asa asb asc asi asl asn ass ast at- ata atb atc ati atl atn ats att baa bab bac bai bal ban bas bat bba bbb bbc bbi bbl bbn bbs bbt bca bcb bcc bci bcl bcn bcs bct bi- bia bib bic bii bil bin bis bit bla blb blc bli bll bln bls blt bna bnb bnc bni bnl bnn bns bnt bsa bsb bsc bsi bsl bsn bss bst bta btb btc bti btl btn bts btt c-- caa cab cac cai cal can cas cat cba cbb cbc cbi cbl cbn cbs cbt cca ccb ccc cci ccl ccn ccs cct ci- cia cib cic cii cil cin cis cit cl- cla clb clc cli cll cln cls clt cn- cna cnb cnc cni cnl cnn cns cnt csa csb csc csi csl csn css cst cta ctb ctc cti ctl ctn cts ctt ia- iaa iab iac iai ial ian ias iat iba ibb ibc ibi ibl ibn ibs ibt ica icb icc ici icl icn ics ict iia iib iic iii iil iin iis iit il- ila ilb ilc ili ill iln ils ilt in- ina inb inc ini inl inn ins int is- isa isb isc isi isl isn iss ist ita itb itc iti itl itn its itt la- laa lab lac lai lal lan las lat lba lbb lbc lbi lbl lbs lbt lca lcb lcc lci lcl lcn lcs lct lia lib lic lii lil lin lis lit lla llb llc lli lll lln lls llt lna lnb lnc lni lnl lnn lns lnt lsa lsb lsc lsi lsl lsn lss lst lta ltb ltc lti ltl lts ltt n-i naa nab nac nai nal nan nas nat nba nbb nbc nbi nbl nbn nbs nbt nca ncb ncc nci ncl ncn ncs nct nia nib nic nii nil nin nis nit nla nlb nlc nli nll nln nls nlt nna nnb nnc nni nnl nnn nns nnt nsa nsb nsc nsi nsl nsn nss nst nta ntb ntc nti ntn nts ntt saa sab sac sai sal san sas sat sba sbb sbc sbi sbl sbn sbs sbt sca scb scc sci scl scn scs sct sia sib sic sii sil sin sis sit sla slb slc sli sll sln sls slt sna snb snc sni snl snn sns snt ss- ssa ssb ssc ssi ssl ssn sss sst sta stb stc sti stl stn sts stt taa tab tac tai tal tan tas tat tba tbb tbc tbi tbl tbn tbs tbt tca tcb tcc tci tcl tcn tcs tct tia tib tic tii til tin tis tit tla tlc tli tll tln tls tlt tna tnb tnc tni tnl tnn tns tnt tsa tsb tsc tsi tsl tsn tss tst tta ttb ttc tti ttl ttn tts ttt